Noun bismarck sea has 2 senses
  1. Bismarck Sea - an arm of the South Pacific southwest of the Bismarck Archipelago
    --1 is a kind of
    sea
  2. Bismarck Sea, battle of the Bismarck Sea - World War II naval battle; Allied land-based bombers destroyed a Japanese convoy in the Bismarck Sea in March 1943
    --2 is a kind of naval battle
    --2 is a part of World War II, World War 2, Second World War
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